Idaea semisericea is a moth of the family Geometridae first described by Warren in 1897.

[1] It is found in the north-eastern Himalayas of India, Sri Lanka,[2] Borneo, Java and the Philippines.

Adult has deep greyish wings with darker fasciae.

Host plants of the caterpillar include Falcataria moluccana.

This geometer moth-related article is a stub.